const createError = require('http-errors')
const express = require('express')
const path = require('path')
const logger = require('morgan')

const app = express()

// 首先将所有 http 链接跳转到 https
if (process.env.SSL_KEY_PATH) {
  app.use (function (req, res, next) {
    if (req.secure) {
      next()
    } else {
      res.redirect('https://' + req.headers.host + req.url)
    }
  })
}

// view engine setup
app.set('views', path.join(__dirname, 'views'))
app.set('view engine', 'ejs')

app.use(logger('dev'))
app.use(express.json())
app.use(express.urlencoded({ extended: false }))
app.use(express.static(path.join(__dirname, '../public')))

app.use('/', require('./routes/index'))
app.use('/api', require('./routes/api'))

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404))
})

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message
  res.locals.error = req.app.get('env') === 'development' ? err : {}

  // render the error page
  res.status(err.status || 500)
  res.render('error')
})

module.exports = app
